q-7,8,9,10,11 As bond order decreases between two carbon atoms: a. the distance
ID: 521418 • Letter: Q
Question
q-7,8,9,10,11
As bond order decreases between two carbon atoms: a. the distance between the atoms stays the same b. the distance between the atoms increases c. the distance between the atoms decreases Which of the following is the Lewis dot structure for one formula unit of magnesium sulfide? Which atom of the following to, {O, C, Li} is the most electronegative? a. C b. Li c. O d. They are all the same. What is the expected electron configuration for the ion As^3+? a. [Ar] 4s^2 3d^10 b. [Ar] 4s^2 3d^10 4p^3 c. [Ar] 3d^10 3p^1 d. [Ar] 4s^2 3d^10 4p^6 Which of the following is a correct description of lattice energy? a. The energy change that occurs when electrons are removed from a lattice. b. The energy change that occurs when a gas condenses to a liquid. c. The energy change that occurs when a liquid freezes. d. The energy change that occurs when an ionic solid is separated into its ions in the gas phase. e The lattice energy of substance is identical to the ionic bond energy determined from coulombs law.Explanation / Answer
7)
As bond order decreases, bond becomes weaker and hence bond length increases
Answer: b
8)
MgS is formed by Mg2+ and s2-
a is correct
b is wrong because MgS is not a covalent compound
c is wrong as Mg must have +2 charge
d is wrong as Mg must have +2 charge
e is wrong as it is not showing electron in outermost shell of S
P forms 4 sigma bond and it does not have any lone pair
Hence P is sp3 hybridised
O forms 1 sigma bond and has 2 lone pairs.
So, O is sp2 hybridised
Answer: a
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